key MERCEDES-BENZ M55AMG 2000 W163 Owner's Guide

53 Restraint systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index BabySmart
TM airbag deactivation system
Special BabySmart
TM compatible child seats, designed
for use with the Mercedes-Benz system and available at
any authorized Mercedes-Benz Center are required for
use with the BabySmart
TM airbag deactivation system.
With the special child seat properly installed, the
passenger front airbag will not deploy. The 7
indicator lamp located in the instrument cluster will be
illuminated, except with key removed or in steering lock
position 0. The system does not deactivate the door
mounted side impact airbag.
Self-test BabySmart
TM
without special child seat installed
After turning key in steering lock to position 1 or 2, the
7 indicator lamp located in the instrument cluster
comes on for approximately 6 seconds, extinguishes,
then blinks once.
If the indicator lamp should not come on or is
continuously lit, the system is not functioning. You must
see an authorized Mercedes-Benz Center before seating
any child on the front passenger seat.
BabySmart
TM is a trademark of Siemens Automotive Corp.
Wa r n i n g !
The BabySmart
TM Airbag Deactivation System will
ONLY work with a special child seat designed to
operate with it. It will not work with child seats
which are not BabySmart
TM compatible.
Never place anything between seat cushion and
child seat (e.g. pillow), since it reduces the
effectiveness of the deactivation system.Follow the manufacturer’s instructions for
installation of special child seats.
The passenger side front airbag will not deploy
only if the 7 indicator lamp remains
illuminated.Please be sure to check the indicator every time
you use the special system child seat.Should the light go out while the restraint is
installed, please check installation. If the light
remains out, do not use the BabySmart
TM restraint
to transport children on the front passenger seat
until the system has been repaired.

55 Restraint systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Emergency tensioning retractor (ETR)
The seat belts for the outboard passenger seats (except
in the optional 3rd row seats) are equipped with
emergency tensioning retractors. These tensioning
retractors are located in each belt’s inertia reel and
become operationally ready with the key in steering
lock position 1 or 2.
The emergency tensioning retractors are designed to
activate only when the seat belts are fastened during
frontal impacts exceeding the first threshold of the SRS
and in rear impacts exceeding a preset severity level.
They remove slack from the belts in such a way that the
seat belts fit more snugly against the body restricting its
forward movement as much as possible.In cases of other frontal impacts, angled impacts, roll-
overs, certain side impacts, or other accidents without
sufficient frontal or rear impact forces, the emergency
tensioning retractors will not be activated. The driver
and passengers will then be protected by the fastened
seat belts and inertia reel in the usual manner.
For seat belt and emergency tensioning retractor see
page 63.

57 Restraint systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index 3Side impact airbag, front
The side impact airbags are located in the front and rear
doors.
In conjunction with wearing the seat belts, the driver
and front passenger airbags can provide increased
protection for the driver and front passenger in certain
frontal impacts exceeding preset thresholds.4Side impact airbag, rear
Door mounted side impact airbags can provide
increased protection to belted outboard occupants on
the impacted side of the vehicle in side impacts
exceeding its preset threshold.
Important!
The operational readiness of the airbag system is
verified by the indicator lamp “SRS” in the instrument
cluster when turning the key in steering lock to
position 1 or 2. If no fault is detected, the lamp will go
3

58 Restraint systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
out after approximately 5 seconds; after the lamp goes
out, the system continues to monitor the components
and circuitry of the airbag system and will indicate a
malfunction by coming on again. If the lamp does not
come on at all or if it fails to extinguish after
approximately 5 seconds or if it comes on thereafter,
a malfunction in the system has been detected.
The following system components are monitored or
undergo a self-check: crash-sensor(s), airbag ignition
circuits, front seat belt buckles, emergency tensioning
retractors, seat sensor.
Initially, when the key is turned from steering lock
position 0 to positions 1 or 2, malfunctions in the
crash-sensor are detected and indicated (the “SRS”
indicator lamp stays on longer than 5 seconds or does
not come on).
Have the system checked at your authorized
Mercedes-Benz Light Truck Center immediately.In the operational mode, after the indicator lamp has
gone out following the initial check, interruptions or
short circuits in the airbag ignition circuit and in the
driver and front passenger seat belt buckle harnesses,
and low voltage in the entire system are detected and
indicated.
Wa r n i n g !
In the event a malfunction of the “SRS” is indicated
as outlined above, the “SRS” may not be
operational. For your safety, we strongly
recommend that you visit an authorized
Mercedes-Benz Light Truck Center immediately to
have the system checked; otherwise the “SRS” may
not be activated when needed in an accident, which
could result in serious or fatal injury, or it might
deploy unexpectedly and unnecessarily which
could also result in injury.

70 Adjustable steering wheel
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Adjustable steering wheelUnlocking :
Move lever (1) down. The indicator lamp, located in the
instrument cluster, comes on.
Ad justing:
Move steering wheel up or down to desired position.
Locking:
Move lever (1) up. The indicator lamp, located in the
instrument cluster, goes out.
Important!
With the key in steering lock position 2, the indicator
lamp in the instrument cluster comes on. It should go
out when the engine is running.
If the indicator lamp does not go out after starting the
engine, the adjustable steering column is not locked
properly.
Do not drive the vehicle until you have properly locked
the steering column.
Wa r n i n g !
Do not adjust the steering wheel while driving. The
steering wheel must be locked while driving.
Adjusting the steering wheel while driving, or
driving without the steering wheel locked could
cause the driver to lose control of the vehicle.

72 Rear view mirrors
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Automatic (optional on ML 320):
With the key in steering lock position 2 and the
automatic antiglare function activated, the mirror
reflection brightness responds to changes in light
sensitivity.
To a ctiva te:
Press button (1). The green indicator lamp in the rear
view mirror lights up.To deactivate:
Press button (1) again. The indicator lamp in the rear
view mirror goes out. The mirror brightness does not
respond to changes in light sensitivity.
Notes:
With gear selector lever in position “R”, or with the
interior lamps (except cargo compartment lamp)
switched on, the mirror brightness does not respond to
changes in light sensitivity.
The automatic antiglare function does not react, if
incoming light is not aimed directly at sensors in the
mirror.
Wa r n i n g !
In the case of an accident liquid electrolyte may
escape the mirror housing when the mirror glass
breaks.Electrolyte has an irritating effect. Do not allow the
liquid come into contact with eyes, skin, clothing,
or respiratory system. In cases it does, immediately
flush affected area with water, and seek medical
help if necessary.

73 Rear view mirrors
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Exterior rear view mirrors
The switch is located on the center console.
Turn key in steering lock to position 1 or 2.First select the mirror to be adjusted – turn switch:
1Left mirror
2Right mirror
To adjust, toggle the switch forward, backward or to
either side.
Note:
After turning off the engine the exterior rear view
mirrors can be operated with a front door opened or
with key in steering lock position 1 for approximately
30 minutes.
P82.00-2044-26
Wa r n i n g !
Exercise care when using the passenger-side
mirror. The passenger-side exterior mirror is
convex (outwardly curved surface for a wider field
of view). Objects in mirror are closer than they
appear. Check your inside rear view mirror or
glance over your shoulder before changing lanes.

74 Rear view mirrors
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Vehicles with automatic antiglare function:
With the key in steering lock position 2, the driver’s
side mirror reflection brightness responds to changes in
light sensitivity.
With gear selector lever in position “R”, or with the
interior lamps (except cargo compartment lamp)
switched on, the driver’s side mirror brightness does
not respond to changes in light sensitivity.Important!
Electrolyte drops coming into contact with the vehicle
paint finish can only be completely removed while in
their liquid state, by applying plenty of water.
Notes:
The exterior mirrors have electrically heated glass. The
heater switches on automatically, depending on outside
temperature.
If an exterior mirror housing is forcibly pivoted from its
normal position, it must be repositioned by applying
firm pressure until it snaps into place.
Wa r n i n g !
In the case of an accident liquid electrolyte may
escape the mirror housing when the mirror glass
breaks.Electrolyte has an irritating effect. Do not allow the
liquid come into contact with eyes, skin, clothing,
or respiratory system. In cases it does, immediately
flush affected area with water, and seek medical
help if necessary.

75 Rear view mirrors
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Exterior rear view mirror, electrically folding
(optional on ML 320 and ML 430)
The switch is located in the dashboard behind the
steering wheel.
1Press switch to fold mirror out
2Press switch to fold mirror inIf an exterior mirror housing is forcibly forced forward
or rearward (hit from the front or from the rear), press
lower half of the switch (2) until you hear a hitting
noise.
Press upper half of the switch (1) to fold mirror out.
You can adjust the exterior rear view mirrors again, see
page 73.
Notes:
The exterior rear view mirrors can vibrate if they are
not completely folded out.
Before running the vehicle through an automatic car
wash, fold the mirrors in, otherwise they might get
damaged.
After turning off the engine the exterior rear view
mirrors can be operated with a front door opened or
with key in steering lock position 1 for approximately
30 minutes.
P82.00-2016-26
12

80 Instrument cluster
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Activating instrument cluster display
The display for temperature, odometer, oil level
indicator and clock is activated by:
•Opening the driver’s door.
•Pressing button (1) in the instrument cluster (with
key removed or in steering lock position 0).
•Turning the key in steering lock to position 1 or 2.Display illumination
Rotate knob (1) to vary intensity of instrument lamps:
•Clockwise - instrument lamp intensity increases.
•Counterclockwise - instrument lamp intensity
decreases.
Odometer/trip odometer
Activate the instrument cluster.
•Press knob (1) once to switch to or from odometer to
trip odometer readout.
•Press and hold knob (1) for more than 1 second to
reset trip odometer (with trip odometer displayed).
•Press knob (1) twice to display next scheduled
service.
Clock
Adjusting clock (instrument cluster activated):
Minute: Pull out knob (2) and turn it to the right.
Hour: Pull out knob (2) and turn it to the left.